Originally Posted by PoohBoi
they won't
225-235 is the width to protect the lips of your wheel from curbs, has no effect on your gauges reading.
45 - is the thicken (height), with 17 wheels, 45 is about just right (may be little tiny lil bit smaller than your stock, make real 58mph look 60mph on the speedometer - you are actually slower than your reading).
You can even go for 50, since 50 is the right size (may be just a bit larger, that'll make your real 62-3 mph look only 60mph on the reading)
Actually the second number is not a measurement of sidewall height, but rather an aspect ratio of width to sidewall. For example a 225/45 tire will have a taller sidewall than a 225/40 tire. That's why when you see lambos with 335/30/18, they still have plenty of sidewall height.
For 6th gen, 225/45/17 is actually the EXACT same rolling diameter as the stock 4cyl tires.
225 is also about the widest you'll want to because of rubbing issues.
Use a tire calculator to check out possible tire sizes.
215/45 or 205/50 are other options you could use as well.